Ashok arrives at starbucks at a random time in between 9: 00 am and 9: 20 am and melina arrives at starbucks at a random time in between 9: 10 am and 9: 30 am. both stay for exactly 15 minutes. what is the probability that the two of them are in the starbucks at the exact same time?

0.5

Step-by-step explanation:

Since Ashok stays for exactly 15 minutes after his arrival, they will meet if he arrives in the 10 minutes between 9:10 and 9:20 independently of the time Melina arrives.

Since there are 20 minutes from 9:00 and 9:20 and Ashok arrives at a random time, the distribution of his arrival is uniform, so the probability that he arrives between 9:10 and 9:20 is

10/20 = 0.5

no not all of them.

step-by-step explanation:

some of them have a square base.